Bibliografie tematiche / Chirped pulse microwave spectroscopy

Letteratura scientifica selezionata sul tema "Chirped pulse microwave spectroscopy"

Autore: Grafiati

Pubblicato: 8 giugno 2024

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Articoli di riviste sul tema "Chirped pulse microwave spectroscopy":

Grubbs, G. S., e S. A. Cooke. "Chirped-pulse Fourier transform microwave spectroscopy of perfluoroiodoethane". Journal of Molecular Structure 963, n. 1 (gennaio 2010): 87–91. http://dx.doi.org/10.1016/j.molstruc.2009.10.019.

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Wilcox, David S., Kelly M. Hotopp e Brian C. Dian. "Two-Dimensional Chirped-Pulse Fourier Transform Microwave Spectroscopy". Journal of Physical Chemistry A 115, n. 32 (18 agosto 2011): 8895–905. http://dx.doi.org/10.1021/jp2043202.

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Juárez, G., M. Sanz-Novo, R. Aguado, J. L. Alonso, I. León e E. R. Alonso. "The eight structures of caffeic acid: a jet-cooled laser ablated rotational study". RSC Advances 13, n. 1 (2023): 212–19. http://dx.doi.org/10.1039/d2ra07124j.

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Graneek, Jack B., William C. Bailey e Melanie Schnell. "Electron-withdrawing effects on the molecular structure of 2- and 3-nitrobenzonitrile revealed by broadband rotational spectroscopy and their comparison with 4-nitrobenzonitrile". Physical Chemistry Chemical Physics 20, n. 34 (2018): 22210–17. http://dx.doi.org/10.1039/c8cp01539b.

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McFadden, Thomas M. C., Nicole Moon, Frank E. Marshall, Amanda J. Duerden, Esther J. Ocola, Jaan Laane, Gamil A. Guirgis e G. S. Grubbs. "The molecular structure and curious motions in 1,1-difluorosilacyclopent-3-ene and silacyclopent-3-ene as determined by microwave spectroscopy and quantum chemical calculations". Physical Chemistry Chemical Physics 24, n. 4 (2022): 2454–64. http://dx.doi.org/10.1039/d1cp04286f.

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Finneran, Ian A., P. Brandon Carroll, Marco A. Allodi e Geoffrey A. Blake. "Hydrogen bonding in the ethanol–water dimer". Physical Chemistry Chemical Physics 17, n. 37 (2015): 24210–14. http://dx.doi.org/10.1039/c5cp03589a.

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Peña, Isabel, e Carlos Cabezas. "Rotational spectra of van der Waals complexes: pyrrole–Ne and pyrrole–Ne2". Physical Chemistry Chemical Physics 22, n. 44 (2020): 25652–60. http://dx.doi.org/10.1039/d0cp04580b.

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Lee, Kin Long Kelvin, Sven Thorwirth, Marie-Aline Martin-Drumel e Michael C. McCarthy. "Generation and structural characterization of Ge carbides GeCn (n = 4, 5, 6) by laser ablation, broadband rotational spectroscopy, and quantum chemistry". Physical Chemistry Chemical Physics 21, n. 35 (2019): 18911–19. http://dx.doi.org/10.1039/c9cp03607e.

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Abstract (sommario):

Rotational spectra of three Ge carbides, linear GeC₄, GeC₅, and GeC₆ have been observed using chirped pulse and cavity Fourier transform microwave spectroscopy via laser ablation, guided by new high-level quantum chemical calculations.

Reinhold, B., I. A. Finneran e S. T. Shipman. "Room temperature chirped-pulse Fourier transform microwave spectroscopy of anisole". Journal of Molecular Spectroscopy 270, n. 2 (dicembre 2011): 89–97. http://dx.doi.org/10.1016/j.jms.2011.10.002.

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Grubbs, G. S., W. C. Bailey† e S. A. Cooke. "Chirped pulse Fourier transform microwave spectroscopy of 1,1,2,2-tetrafluoro-3-iodopropane". Molecular Physics 107, n. 21 (10 novembre 2009): 2221–25. http://dx.doi.org/10.1080/00268970903228741.

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Tesi sul tema "Chirped pulse microwave spectroscopy":

Kadiwar, Gautam. "Chirped-Pulse Fourier Transform Microwave Spectroscopy of Fluoroiodoacetonitrile and Chloropentafluoroacetone". Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc84230/.

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This work focuses on finding the complete iodine and nitrogen nuclear electric quadrupole coupling tensors for fluoroiodoacetonitrile using chirped-pulse Fourier transform microwave spectroscopy. Fluoroiodoacetonitrile contains two hyperfine nuclei, iodine (I=5/2) and nitrogen (I=1) and the spectra were observed with great resolution. A total of 499 transitions were observed for this molecule. The a, b and c rotational constants were obtained. A study of chloropentafluoroacetone was also done using chirped-pulse Fourier transform microwave spectroscopy. The two chlorine isotopes for this molecule, Cl-35 and Cl-37 were observed and 326 and 170 transitions were recorded, respectively.

Grubbs, Garry Smith II. "Investigating Molecular Structures: Rapidly Examining Molecular Fingerprints Through Fast Passage Broadband Fourier Transform Microwave Spectroscopy". Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc67988/.

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Microwave spectroscopy is a gas phase technique typically geared toward measuring the rotational transitions of Molecules. The information contained in this type of spectroscopy pertains to a molecules structure, both geometric and electronic, which give insight into a molecule's chemistry. Typically this type of spectroscopy is high resolution, but narrowband ≤1 MHz in frequency. This is achieved by tuning a cavity, exciting a molecule with electromagnetic radiation in the microwave region, turning the electromagnetic radiation o, and measuring a signal from the molecular relaxation in the form of a free induction decay (FID). The FID is then Fourier transformed to give a frequency of the transition. "Fast passage" is defined as a sweeping of frequencies through a transition at a time much shorter (≤10 s) than the molecular relaxation (≈100 s). Recent advancements in technology have allowed for the creation of these fast frequency sweeps, known as "chirps", which allow for broadband capabilities. This work presents the design, construction, and implementation of one such novel, high-resolution microwave spectrometer with broadband capabilities. The manuscript also provides the theory, technique, and motivations behind building of such an instrument. In this manuscript it is demonstrated that, although a gas phase technique, solids, liquids, and transient species may be studied with the spectrometer with high sensitivity, making it a viable option for many molecules wanting to be rotationally studied. The spectrometer has a relative correct intensity feature that, when coupled with theory, may ease the difficulty in transition assignment and facilitate dynamic chemical studies of the experiment. Molecules studied on this spectrometer have, in turn, been analyzed and assigned using common rotational spectroscopic analysis. Detailed theory on the analysis of these molecules has been provided. Structural parameters such as rotational constants and centrifugal distortion constants have been determined and reported for most molecules in the document. Where possible, comparisons have been made amongst groups of similar molecules to try and get insight into the nature of the bonds those molecules are forming. This has been achieved the the comparisons of nuclear electric quadrupole and nuclear magnetic coupling constants, and the results therein have been determined and reported.

Powoski, Robert A. "Molecular Structure Analyses of Asymmetric Hydrocarbon Liquid Compounds in the Gas Phase Using Chirped-pulse Fourier Transform Microwave Spectroscopy: Acyl Chlorides and Perfluorinated Acyl Chlorides". Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc103374/.

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Examinations of the effects of (a.) alkyl carbon chain length and (b.) perfluorination of acyl chlorides; propionyl chloride, butyryl chloride, valeroyl chloride, and perfluorinated acyl chlorides; perfluoropropionyl chloride and perfluorobutyryl chloride, are reported and compared using CP-FTMW spectroscopy. All of these molecules are already published in various journals except for valeroyl chloride. The chapters are organized by molecule alkyl chain length and include some background theory. Conformational stability, internal rotation, helicity, and ionic character of the C-Cl bond via the nuclear electric quadrupole coupling constant (χzz) are analyzed. Results show syn, syn-anti/syn-gauche, and syn-anti-anti/syn-gauche-anti stable conformations. Internal rotation was only seen in propionyl chloride. Helicity was not observed. (χzz) was observed to be inert to alkyl chain length, ~ 60 MHz and ~ 65 MHz for the nonfluorinated and fluorinated acyl chlorides. Partial fluorination and varying functional groups are recommended.

Osseiran, Noureddin. "Spectroscopic characterization of molecules of atmospheric interest : internal dynamics and microsolvation with hydrogen sulfide (H2S)". Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR062.

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Les composés organiques volatils biogéniques (COVBs), et en particulier les monoterpènes (C10H16), sont des molécules naturellement présentes dans l’atmosphère, qui sont liées à la formation d’aérosols organiques secondaires (SOA). Ils peuvent altérer les propriétés physiques et chimiques de l’atmosphère, avoir des effets négatifs sur la santé humaine et contribuer aux changements climatiques. Une forte relation existe entre la structure d’un système moléculaire et les interactions inter- et intramoléculaires présentes à l’échelle moléculaire. Par conséquent, l’accès aux informations sur la structure, en phase gazeuse, et la dynamique interne pourrait être essentiel pour prédire les voies possibles de réaction ou de la formation de complexes et d’agrégats.La spectroscopie micro-ondes à transformée de Fourier (FTMW) une fois combinée aux calculs de chimie quantique, sont une approche fiable pour étudier le paysage conformationnel, la structure et la dynamique interne de plusieurs types des molécules, et notamment les molécules d’intérêt atmosphérique, leurs produits d’oxydation et leurs complexes associés.Dans le cadre de cette thèse, nous avons appliqué cette approche théorique-expérimentale pour caractériser les complexes de deux monoterpénoïdes : le fenchol (C10H18O) et la fenchone (C10H16O) avec un autre contaminant atmosphérique, à savoir le H2S. Les conformations stables en phase gazeuse ont été identifiées dans le spectre de rotation pure à l’aide des calculs ab initio et DFT. Une analyse comparative des complexes observés avec leurs analogues hydratés a confirmé la présence d’une liaison hydrogène plus faible. En plus, nous avons observé un mouvement de grande amplitude, décrit qualitativement. Les interactions non covalentes stabilisantes des deux complexes ont également été évaluées.De manière similaire, et dans le même contexte général, nous avons également caractérisé le paysage conformationnel et la rotation interne du groupe méthyle dans le cas de la limona cétone (C9H14O), qui est un BVOC issu de l’oxydation du limonène. La hauteur de barrière expérimentale de la torsion du méthyle a montré un certain écart par rapport aux valeurs calculées, ce qui nous a poussé vers une investigation plus approfondie, qui a révélé la présence d’une interaction intermoléculaire.La deuxième partie de cette thèse a été consacrée à la construction et à l’évaluation d’un nouveau spectromètre FTMW à dérive de fréquence, large bande (6-18 GHz). Une description technique détaillée du spectromètre est donnée dans ce manuscrit. De plus, les tests préliminaires effectués pour évaluer les performances du spectromètre sont rapportés
Biogenic volatile organic compounds (BVOCs), and especially monoterpenes (C10H16), are molecules naturally occurring in the atmosphere, which have been linked to the formation of secondary organic aerosol (SOA). They can alter the physical and chemical properties in the atmosphere, have negative effects on human health and contribute to climate change. There exists a strong relationship between the structure of a molecular system and the inter- and intramolecular interactions present on the molecular scale.Hence, having in-depth information about the gas phase structure and internal dynamics of these molecules, or their molecular complexes, is important to better understand their reaction pathways and complexation patterns.The synergic combination of quantum chemical calculations and Fourier transform microwave (FTMW) spectroscopy has been shown to be a reliable approach to examine the conformational landscape, structure and internal dynamics of several types of molecules of atmospheric interest, their oxidation products and their complexes. In the framework of this thesis, we have applied this theoretical-experimental approach to characterize the complexes of two monoterpenoids: fenchol (C10H18O) and fenchone (C10H16O) with another atmospheric contaminant: the H2S molecule. The gas phase stable conformations were identified in the pure rotational spectrum with the supportof ab initio and DFT calculations. A comparative analysis of the observed complexes with their water analogues confirmed the presence of weaker hydrogen bonds. On top of that, we observed a large amplitude motion, that was qualitatively described. The stabilizing non-covalent interactions of the two complexes were also evaluated.In a similar manner, and within the same general context, we also characterized the conformational landscape and methyl internal rotation in the case of limona ketone (C9H14O), which is a biogenic volatile organic compounds (BVOC) originating from the oxidation limonene. The experimental barrier height of the methyl torsion showed some deviation from the calculated values, which pushed toward a more thorough examination, that revealed the presence of an intermolecular interaction.The second part of this thesis was dedicated to the construction and evaluation of a broadband chirped pulse FTMW spectrometer, operating in the range 6-18 GHz. A detailed technical description of the spectrometer is given herein. Moreover, the preliminary tests performed to evaluate the performance of the spectrometer are reported

Colombo, Anthony P. (Anthony Paul). "Chirped-pulse millimeter-wave spectroscopy, dynamics, and manipulation of Rydberg-Rydberg Transitions". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82169.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2013.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (p. 131-138).
The chirped-pulse millimeter-wave (CPmmW) technique is applied to transitions between Rydberg states, and calcium atoms are used as the initial test system. The unique feature of Rydberg{Rydberg transitions is that they have enormous electric dipole transition moments: ~5 kiloDebye at n* ~45, where n* is the eective principal quantum number. After polarization by a mm-wave pulse in the 70{84 GHz frequency region, the excited transitions re-radiate free induction decay (FID) at their resonant frequencies, and the FID is heterodyne-detected by the CPmmW spectrometer. Data collection and averaging are performed in the time domain. The spectral resolution is ~100 kHz. Because of the large transition dipole moments, the available mm-wave power is sucient to polarize the entire bandwidth of the spectrometer (12 GHz) in each pulse, and high-resolution survey spectra may be collected. Both absorptive and emissive transitions are observed, and they are distinguished by the phase of their FID relative to that of the excitation pulse. With the combination of the large transition dipole moments and direct monitoring of transitions, dynamics are observed, such as transient nutations from the interference of the excitation pulse with the polarization that it induces in the sample. Transient nutations also provide information about the sample, such as the dipole moment and the number density of Rydberg states. Since the waveform produced by the mm-wave source may be precisely controlled, states with high angular momentum may be populated by a sequence of pulses while recording the results of these manipulations in the time domain. Also, the superradiant decay of the Rydberg sample is probed both directly through FID and indirectly using photon echoes. Prospects for further manipulations, such as adiabatic rapid passage, composite pulses, and optical/mm-wave stimulated Raman adiabatic passage, are evaluated. The application of the CPmmW technique to transitions between Rydberg states of molecules is discussed.
by Anthony P. Colombo.
Ph.D.

Klein, Ethan Avram. "A buffer gas cooled molecular beam apparatus for chirped pulse millimeter wave spectroscopy". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98781.

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Thesis: S.B., Massachusetts Institute of Technology, Department of Chemistry, 2015.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 34-36).
An apparatus that utilizes buffer gas cooling to produce slow atomic (Ba, Ca) and molecular (BaF, CaF) beams is constructed. In-cell temperatures of 20 ± 0.25K are achieved with chamber cooldown times of under two hours. Laser Induced Fluorescence (LIF) spectra of BaF and CaF confirmed thermalization of the molecular beam to the temperature of the buffer gas and additional hydrodynamic cooling to rotational and translational temperatures under 10K. Laser fluence effects on the intensity of barium and calcium ablation were studied and used to optimize laser parameters for maximum ablation of the desired species. A chirped pulse millimeter wave (CPmmW) setup was combined with the buffer gas cooling apparatus for combined laser and millimeter wave spectroscopy experiments of Rydberg states. LabVIEW programming is used for an internal temperature feedback system, raster scanning of the ablation target, as well as millimeter wave FID signal digital acquisition. Use of the apparatus for chirped pulse microwave spectroscopy of buffer gas cooled beams have led to orders of magnitude improvement in both the resolution and the reduction of time required to record molecular Rydberg spectra.
by Ethan Avram Klein.
S.B.

Shaver, Rachel Glyn. "The use of chirped pulse millimeter-wave spectroscopy in chemical dynamics and kinetics". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/79274.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 51-53).
.Chirped-pulse millimeter wave (CPmmW) spectroscopy is a revolutionary technique that has taken advantage of advances in electronics to give high signal to noise broadband rotational spectra in a very short period of time that provides meaningful line intensities. We have implemented this technique in the 58 - 102 GHz range to study the rotational spectra of molecules with two heavy atoms. Photolysis (at 193 nm) and pyrolysis of vinyl cyanide have produced differing HCN and HNC vibrational population distributions. The photolysis experiment does not sample a collisional regime and the resulting spectra show excited states of HCN and HNC, whereas the pyrolysis experiment, which does sample a collisional regime, results in spectra that are devoid of vibrational satellites. This indicates that the intensities of vibrational satellite transitions sample the photolysis reaction only and not post-photolysis collisional effects. Mono-deuterated vinyl cyanide was photolyzed at 193 nm, in which all HCN/HNC are produced via a four-center mechanism and all DCN/DNC are produced via a three-center mechanism. The HCN and HNC products dominate, demonstrating the greater importance of the three-center mechanism. CPmmW spectroscopy is also a valuable tool in studying unimolecular and bimolecular reactions. We have studied the unimolecular decomposition of deuterated methyl nitrite which produces DNO products and bimolecular hydrogen abstraction reaction of NO with acetaldehyde resulting in HNO products. These reactions demonstrate the potential use of nitric oxide radical as a gas-phase catalyst to perform cracking of hydrocarbons and sugars.
by Rachel Glyn Shaver.
S.M.

Ganz, Thomas. "Supercontinuum generation by chirped pulse compression for ultrafast spectroscopy and broadband near-field microscopy". Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-148551.

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Liu, Weilin. "Real-time Interrogation of Fiber Bragg Grating Sensors Based on Chirped Pulse Compression". Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20289.

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Theoretical and experimental studies of real-time interrogation of fiber Bragg grating (FBG) sensors based on chirped pulse compression with increased interrogation resolution and signal-to-noise ratio are presented. Two interrogation systems are proposed in this thesis. In the first interrogation system, a linearly chirped FBG (LCFBG) is employed as the sensing element. By incorporating the LCFBG in an optical interferometer as the sensor encoding system, employing wavelength-to-time mapping and chirped pulse compression technique, the correlation of output microwave waveform with a chirped reference waveform would provide an interrogation result with high speed and high resolution. The proposed system can provide an interrogation resolution as high as 0.25 μ at a speed of 48.6 MHz. The second interrogation system is designed to achieve simultaneous measurement of strain and temperature. In this system, a high-birefringence LCFBG (Hi-Bi LCFBG) is employed as a sensing element.

BRAGA, PEDRO TOVAR. "TIME-RESOLVED OPTICAL SPECTROSCOPY FOR LASER CHIRP CHARACTERIZATION AND SELF-HETERODYNE GENERATION OF LFM AND NLFM MICROWAVE PULSES". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35528@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Este trabalho apresenta a geração de pulsos de microondas linearmente e não-linearmente modulados em frequência (LFM e NLFM) através da técnica fotônica de auto-heterodinagem. Ao utilizar eletrônica de baixa frequência para modular um diodo laser de feedback distribuído, a variação da portadora óptica no tempo (chirp) é observada, o que é causado predominantemente por efeito térmico. Este efeito, combinado com batimento auto-heteródino, foi capaz de produzir pulsos LFM com alto produto largura de banda-tempo (TBWP). Uma outra abordagem é necessária para geração de pulsos NLFM. Primeiro, é introduzida a técnica Espectroscopia Óptica Resolvida no Tempo para caracterização do chirp de um diodo laser. Em seguida, um estímulo de corrente em formato de função degrau é aplicado ao diodo laser para aquisição da função de transferência de seu chirp, H(s). Com a posse de H(s), uma simulação numérica foi usada para descobrir o estímulo necessário de corrente i(t) para obtenção de pulsos de microondas NLFM através da técnica de auto-heterodinagem. Os resultados experimentais coincidem com a simulação.
This work reports the photonic generation of both linear and non-linear frequency modulation (LFM and NLFM) microwave pulses through a self-heterodyne scheme. By using low-frequency electronics to drive a distributed feedback laser diode, optical chirping is generated predominantly by thermal effect. Combining laser chirping and self-heterodyning, LFM pulses with high time-bandwidth product (TBWP) were achieved. A different approach is required for generation of NLFM microwave pulses. First, for characterization of the laser diode chirp, it is introduced a technique named Time- Resolved Optical Spectroscopy. Then, by using a step-shaped current stimulus, the laser chirp transfer function H(s) was obtained. With knowledge on H(s), a numerical simulation produced the suitable current stimulus i(t) needed to generate NLFM microwave pulses through self-heterodyning. Experimental results agreed with the numerical simulations.

Più fonti

Capitoli di libri sul tema "Chirped pulse microwave spectroscopy":

Shirai, Hideto, Tien Tien Yeh, Yutaka Nomura, Chih Wei Luo e Takao Fuji. "Ultrabroadband Infrared Pump-Probe Spectroscopy Using Chirped-Pulse Upconversion". In Springer Proceedings in Physics, 233–36. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13242-6_56.

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Van’kov, A. B., A. A. Kozlov, S. A. Chizhov, V. E. Yashin, V. A. Gorbunov e N. G. Gogoleva. "High Contrast Ratio Sub-Picosecond Pulse Generation and its Characterization in Nd:Glass Laser System Based on Chirped Pulse Amplification". In Ultrafast Processes in Spectroscopy, 41–43. Boston, MA: Springer US, 1996. http://dx.doi.org/10.1007/978-1-4615-5897-2_9.

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Bertrand, Valérie, Michèle Lalande e Bernard Jecko. "Electromagnetic Analysis of Exponentially Tapered Coplanar Stripline Antennas Used in Coherent Microwave Transient Spectroscopy Technique". In Ultra-Wideband, Short-Pulse Electromagnetics 3, 197–204. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4757-6896-1_23.

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PAJSKI, JASON J., MATTHEW D. LOGAN, KEVIN O. DOUGLASS, GORDON G. BROWN, BRIAN C. DIAN, BROOKS H. PATE e RICHARD D. SUENRAM. "CHIRPED-PULSE FOURIER TRANSFORM MICROWAVE SPECTROSCOPY: A NEW TECHNIQUE FOR RAPID IDENTIFICATION OF CHEMICAL AGENTS". In Spectral Sensing Research for Water Monitoring Applications and Frontier Science and Technology for Chemical, Biological and Radiological Defense, 289–303. WORLD SCIENTIFIC, 2008. http://dx.doi.org/10.1142/9789812833242_0026.

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Murakami, Hiroshi. "Terahertz Waveform Measurements Using a Chirped Optical Pulse and Terahertz Spectroscopy of Reverse Micellar Solution: Towards Time-resolved Terahertz Spectroscopy of Protein in Water". In Terahertz Spectroscopy - A Cutting Edge Technology. InTech, 2017. http://dx.doi.org/10.5772/67195.

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Chechik, Victor, Emma Carter e Damien Murphy. "1Advanced EPR techniques". In Electron Paramagnetic Resonance. Oxford University Press, 2016. http://dx.doi.org/10.1093/hesc/9780198727606.003.0009.

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This chapter explains the basic theory of continuous wave (CW) electron paramagnetic resonance (EPR), illustrating the power of the technique to study a wide range of paramagnetic systems. It cites several experiments based on pulsed techniques similar to those routinely employed in nuclear magnetic resonance (NMR) spectroscopy. It also talks about how Pulse EPR can offer significant advantages over CW methods, such as direct detection of relaxation times and access to longer distances between paramagnetic centres. The chapter talks about the independent control of the electron and nuclear spins via the application of short microwave (MW) and radiofrequency (RF) pulses. It presents the vector model and product operator formalism used in pulse techniques.

Atti di convegni sul tema "Chirped pulse microwave spectroscopy":

Abeysekera, Chamara, Arthur Suits, Ian Sims, Robert Field, Barratt Park, Baptiste Joalland, Kirill Prozument e James Oldham. "CHIRPED PULSE MICROWAVE SPECTROSCOPY IN PULSED UNIFORM SUPERSONIC FLOWS". In 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.mh09.

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Hays, Brian, Timothy Zwier, Chamara Abeysekera e Alicia Hernandez-Castillo. "CHIRPED PULSE MICROWAVE SPECTROSCOPY ON METHYL BUTANOATE". In 71st International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2016. http://dx.doi.org/10.15278/isms.2016.mj01.

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Dunkel, Emily, e Chris Dewberry. "HORNLESS CHIRPED PULSE FOURIER TRANSFORM MICROWAVE SPECTROMETER". In 74th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2019. http://dx.doi.org/10.15278/isms.2019.wc03.

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Suits, Arthur, Ian Sims, Robert Field, Barratt Park, Nuwandi Ariyasingha, Baptiste Joalland, Lindsay Zack e Chamara Abeysekera. "CPUF: CHIRPED-PULSE MICROWAVE SPECTROSCOPY IN PULSED UNIFORM SUPERSONIC FLOWS". In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.ma04.

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Gaster, Sydney, Gordon Brown, Sean Arnold e Taylor Hall. "CHIRPED-PULSE MICROWAVE SPECTROSCOPY IN THE UNDERGRADUATE CHEMISTRY CURRICULUM". In 70th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2015. http://dx.doi.org/10.15278/isms.2015.rc07.

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McCabe, Morgan, Gordon Brown, Miranda Smith, J. Chewning, Sean Arnold e Steven Shipman. "CHIRPED-PULSE FOURIER TRANSFORM MICROWAVE SPECTROSCOPY OF 3-METHOXYPROPYLAMINE". In 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.re10.

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McCabe, Morgan, e Steven Shipman. "WAVEGUIDE CHIRPED-PULSE FOURIER TRANSFORM MICROWAVE SPECTROSCOPY OF ALLYL BROMIDE". In 69th International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2014. http://dx.doi.org/10.15278/isms.2014.re09.

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Brown, Gordon, Garrett Youngblood, Elic Weeks, Shamitha Nandi, Ziwei Liu, Anish Kanthamneni, Emily Geraghty e Josue Cervantes. "THE CHIRPED-PULSE CLUB: MICROWAVE SPECTROSCOPY RESEARCH IN HIGH SCHOOL". In 2021 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.fh10.

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Swanson, Christian, G. Grubbs II, Joshua Isert, Amanda Duerden e Nicole Moon. "PHASE DETERMINATION IN MULTI-ANTENNA DETECTION CHIRPED-PULSE MICROWAVE SPECTROSCOPY". In 2021 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2021. http://dx.doi.org/10.15278/isms.2021.ra05.

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Pate, Brooks, Justin Neill e Channing West. "METRICS FOR THE PERFORMANCE OF CHIRPED-PULSE FOURIER TRANSFORM MICROWAVE SPECTROMETERS". In 2020 International Symposium on Molecular Spectroscopy. Urbana, Illinois: University of Illinois at Urbana-Champaign, 2020. http://dx.doi.org/10.15278/isms.2020.fc02.

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